.data
msg:
    .ascii      "Hello, ARM!\n"
len = . - msg
.text
.global _start
 _start:
 bl      label1
 label1:
 mov     x0, x30
 bl      label2
 label2:
 mov     x1, x30
 /*ldr     x1, =msg*/
 /*ldr     x2, =len*/
 /*write syscall num is 64, exit syscall is num 93*/
 sub     x0, x1, x0
 mov     x8, #93
 svc     #0
